lattice/latticegpu.jl
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Cleanup and Zeuthen flow

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At this moment the zfl_* routines only perform the Symanzik flow. The
extra term has to be added, but it should not impact timmings
This commit is contained in:
Alberto Ramos 2021-09-26 10:32:58 +02:00
commit 4eed0ebb42
6 changed files with 38 additions and 4 deletions
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2
src/LatticeGPU.jl
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@ -31,6 +31,6 @@ include("YM/YM.jl")
using .YM
export YMworkspace, GaugeParm, force0_wilson!, field, field_pln, randomize!, zero!, norm2
export gauge_action, hamiltonian, plaquette, HMC!, OMF4!
export wfl_euler, wfl_rk3
export wfl_euler, wfl_rk3, zfl_euler, zfl_rk3
end # module

2
src/YM/YM.jl
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@ -94,6 +94,6 @@ include("YMhmc.jl")
export gauge_action, hamiltonian, plaquette, HMC!, OMF4!
include("YMflow.jl")
export wfl_euler, wfl_rk3
export wfl_euler, wfl_rk3, zfl_euler, zfl_rk3
end

1
src/YM/YMact.jl
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@ -70,6 +70,7 @@ function krnl_impr!(plx, U::AbstractArray{T}, c0, c1, lp::SpaceParm{N,M,D}) wher
gc = U[b2,id2,r2]
end
h3 = (ga*gb)/gc
# END staples
if ru2 == r
gb = Ush[bu2,1]

33
src/YM/YMflow.jl
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@ -42,3 +42,36 @@ function wfl_rk3(U, ns, eps, lp::SpaceParm, ymws::YMworkspace)
return nothing
end
function zfl_euler(U, ns, eps, lp::SpaceParm, ymws::YMworkspace)
for i in 1:ns
force_gauge(ymws, U, 5.0/3.0, lp)
U .= expm.(U, ymws.frc1, 2*eps)
end
return nothing
end
function zfl_rk3(U, ns, eps, lp::SpaceParm, ymws::YMworkspace)
for i in 1:ns
c0 = eps/2
force_gauge(ymws, U, 5.0/3.0, lp)
ymws.mom .= ymws.frc1
U .= expm.(U, ymws.mom, c0)
c0 = -34*eps/36
c1 = 16*eps/9
force_gauge(ymws, U, 5.0/3.0, lp)
ymws.mom .= c0.*ymws.mom .+ c1.*ymws.frc1
U .= expm.(U, ymws.mom)
c1 = 6*eps/4
force_gauge(ymws, U, 5.0/3.0, lp)
ymws.mom .= c1.*ymws.frc1 .- ymws.mom
U .= expm.(U, ymws.mom)
end
return nothing
end

2
src/YM/YMhmc.jl
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@ -13,7 +13,7 @@
function gauge_action(U, lp::SpaceParm, gp::GaugeParm, ymws::YMworkspace)
Returns the value of the Wilson plaquette action for the configuration U.
Returns the value of the gauge plaquette action for the configuration U. The parameters `\beta` and `c0` are taken from the `gp` structure.
"""
function gauge_action(U, lp::SpaceParm, gp::GaugeParm{T}, ymws::YMworkspace{T}) where T <: AbstractFloat

2
src/main/test.jl
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@ -12,7 +12,7 @@ println(CUDA.device())
GRP = SU3
ALG = SU3alg
PREC = Float64
lp = SpaceParm{4}((32,32,32,32), (4,4,4,4))
lp = SpaceParm{4}((64,64,64,64), (4,4,4,4))
gp = GaugeParm{PREC}(6.0, 5.0/3.0, (0.0,0.0), 3)
println("Space Parameters: ", lp)